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Finding the Fourth Proportional to 664,710.63, 996,856.81 and 215,327.24

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Solution

The fourth proportional to 664,710.63, 996,856.81 and 215,327.24 is: 322,923.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,710.63 : 996,856.81 = 215,327.24 : x
  2. Step 2: Convert to fraction form
    664,710.63/996,856.81 = 215,327.24/x
  3. Step 3: Cross multiply
    664,710.63x = 996,856.81 × 215,327.24
  4. Step 4: Simplify right side
    664,710.63x = 214,650,421,295.97
  5. Step 5: Solve for x
    x = 214,650,421,295.97/664,710.63
  6. Step 6: Final answer
    x = 322,923.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.